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Streaming velocities as a dynamical estimator of Omega

Abstract:

It is well known that estimating the pairwise velocity of galaxies, v_{12}, from the redshift space galaxy correlation function is difficult because this method is highly sensitive to the assumed model of the pairwise velocity dispersion. Here we propose an alternative method to estimate v_{12} directly from peculiar velocity samples, which contain redshift-independent distances as well as galaxy redshifts. In contrast to other dynamical measures which determine beta = sigma_8 x Omega^{0.6}, ...

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Publisher copy:
10.1086/311959

Authors


Ferreira, PG More by this author
Juszkiewicz, R More by this author
Feldman, HA More by this author
Journal:
Astrophys.J.
Volume:
515
Pages:
L1-L4
Publication date:
1998-12-28
DOI:
URN:
uuid:62c7b0aa-a364-403d-bb30-8d988a8215ed
Source identifiers:
208137
Local pid:
pubs:208137
Keywords:

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